Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 398, Issue 4, Pages 2143-2151Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2009.15264.x
Keywords
methods: analytical; large-scale structure of Universe
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We show how the excursion set moving barrier model for halo abundances may be generalized to the local non-Gaussian f(nl) model. Our estimate assumes that the distribution of step sizes depends on f(nl), but that they are otherwise uncorrelated. Our analysis is consistent with previous results for the case of a constant barrier, and highlights some implicit assumptions. It also clarifies the basis of an approximate analytic solution to the moving barrier problem in the Gaussian case, and shows how it might be improved.
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